See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
27°
Clear
Feels Like: 25°
Min: 23°
Max: 27°
The next few hours will be clear, with today reaching 27°C and dropping to 21°C. The coming days will be light rain throughout the day.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:00
Sunrise
17:57
Sunset
Moon
Waxing Gibbous
15:40
Moonrise
02:07
Moonset
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View stargazing scoreWeather in Niihama today, September 22, 2026
Sunshine leads the day in Niihama on September 22, 2026, with a patch of cloud building near 18:00. The broader outlook stays fair despite that temporary thickening.
The temperature range runs from about 23°C up to 27°C. Moisture in the air spans 53%-67%, with the highest values around 23:00. A lighter breeze peaks around 21:00 near 6.6 km/h.
Expect a more open afternoon, with limited cloud around 16% by 18:00. Residual damp risk should be lower than earlier. Expect visibility around 16.1 km. The sun rises at 06:00 and sets at 17:57, for a total of 11 hours 56 minutes of sunlight today.
Overall, Niihama on September 22, 2026 favours outdoor plans under mostly open skies, with a comfortable high near 27°C.
Frequently asked questions about weather in Niihama
How warm does it get in Niihama?
The warmest month in Niihama is August, with average high temperatures of 30°C. The average temperature during this period is around 28°C.
How cold does it get in Niihama?
The coldest month in Niihama is January, with average low temperatures of 3°C. The average temperature during this period is around 5°C.
What is the wettest time of year in Niihama?
The wettest month in Niihama is June, with an average of 265mm of precipitation.
What is the driest time of year in Niihama?
The driest month in Niihama is December, with an average of 71mm of precipitation.
